If the displacement of a particle is given by the formula S = 3t^3 - 20t^2 + 40t. Find (i) the displacement after 3 seconds (ii) the formula for the velocity at any time t (iii) the value of t when the particle is not moving (iv) the initial velocity of the particle (v) the formula for the acceleration at any time t (vi) the initial acceleration of the particle.​

I) displacement is s(3) = 81 - 180 +120

II) below. Iii) v= 0 when. 9t^2 -40t +40 = 0

IV) below. V) when t = 0 a(0) = -40

Step-by-step explanation: speed is first derivative of distance. V = s' (t)

V(t) = 9t^2 -40t +40

Acceleration is second derivative of distance. A= v'(t) = 18t -40

81 seats

step-by-step explanation:

if you multiply 0.65 times 125 then you get 81.5 seats. well since you can't have half of a seat you have to round down and get 81 seats in the no children zones. that leave 44 seats outside of the no children zone.

dont trust me im no expert these losers made me fail a test bro this sucks

step-by-step explanation: